Half to feank beaudeeatj



(No Model.)

' H. H. TRAV'ISS.

P-ITMAN. No. 299,698. Patented June- 3, 1884.

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or edge view of the same.

UNITED STATES PATENT OF ICE.

HENRY HAMLET TRAVISS, OF MOSINEE, WISCONSIN, ASSIGNOR OF ONE HALF 'IOFRANK BEAUDREAU, OF SAME PLACE.

PYITMAN.

SPECIFICATION forming part of Letters Patent No. 299,698, dated June 3,1884.

Application filed April 10, 1884. (No model.)

To all whom it may concern.-

Be it known that I, HENRY H. TRAVISS, a citizen of the United States,and a resident of Mosinee, in the county of Marathon and State ofWisconsin, have invented certain new and useful Improvements in Devicesfor Oonvertin g Motion; and I do hereby declare that the following is afull, clear, and exact description of the invention, which will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, which form apart of this specification, and in which Figure 1 is a side'view of myimproved de vice for converting motion. Fig. 2 is an end Fig. 3 is alongitudinal sectional view through line or in Fig. 1. Fig. 4 is aperspective view of the pitmanhead, with its slides removed from thegrooved disk; and Fig. 5 is a sectional detail view of.

the disk.

Similar letters of reference indicate corresponding partsin all thefigures.

My invention has relation to that class of devices for convertingreciprocating motion into rotary, or vice versa, in which a pitman isprovided at its head with two pivoted blocks, which slide in twodiametrical ways crossing each other at right angles in a disk securedupon the revolving shaft; and it consists in the detailed constructionand combination of parts of this disk, as hereinafter more fullydescribed and claimed.

In devices of this kind it is desirable to have convenient access to theways in which the blocks slide, for the purpose of cleaning them, and atthe same time it is desirable to have the disk as strong as possible,and in devices of this kind the ways have formerly passed through thedisk, forming slots, projecting lugs being arranged upon the other sideof the disk, for the purpose of guiding the blocks, and these slots haveweakened the disk, while the lugs upon the side of the disk have beenapt to be broken or otherwise injured by the sliding blocks, or theblockshave been injured by the lugs; and for the purpose of simplify- 7ing the construction of the device and providing easy access to theways, I construct the device as follows:

In the accompanying drawings, A is the pitman, having slots B and B, inwhich the boxes 0 and c are locked in place upon the wristpins 0 and Gby means of the wedges D and E, or any other suitablemeans. Thewrist-pins project from the outer side of the blocksF and G, havinglaterally-proj ecting flanges an at the edges of their inner portions,which inner flanged portions slide in ways Hand I, intersecting eachother at right angles through the center of a circular disk, J, which issecured upon the revolving shaft by a central hub, K. The flanges uponthe inner portions of the sliding blocks fit exactly in the ways, theybeing of the same thickness as the depth of the ways,

and sector-shaped plates L are removably secured upon the face of thedisk, havingtheir edges M overlapping the ways, bearing against thesides of the reduced outer portions of the sliding blocks, thesector-shaped plates thus holding the sliding blocks in place in theways and forming guides for the same with their edges. It will be seenthat these sector-shaped plates may be removed, allowing the pitman tobe uncoupled from the disk without removing it from the blocks, and thatthe ways and blocks may thus be exposed for the purpose of cleaning themor for similar purpose. It will also be seen that the blocks slidingforward and back in the partly-covered ways having solid inner sides arenot liable to be injured or to get out of order.

I am aware, as before stated, that devices for converting motion havebeen made, in which two blocks pivoted to the head of a pitman slide indiametrical ways, crossing each other at right angles, and I do not wishto claim such construction, broadly; but

I claim The combination, with the disk having diametrical ways in itsface, crossing each other

